I'm mostly a fan of Hardcore/Gabber, Breakcore/Breakbeat and Speedcore/Extratone/Splittercore myself.
D&B and Trip-Hop aren't too bad though.
I listen to a few songs from some UK Hardcore and EuroTrance acts, but I'm not huge on that stuff as a whole. Dougal & Gammer have some cool songs, and Alphazone does some good memorable Trance style remixes.
Another great electronica artist (from the same label as Aphex Twin) is Squarepusher, a talented bass player who sort of mixes jazz with drum n' bass/electronica/ambience. Also has a very unique style, which after a while you can separate from any other artist.